381322523 has 4 divisors (see below), whose sum is σ = 383319168. Its totient is φ = 379325880.

The previous prime is 381322519. The next prime is 381322553. The reversal of 381322523 is 325223183.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325223183 = 107 ⋅3039469.

It is a cyclic number.

It is not a de Polignac number, because 381322523 - 2² = 381322519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381322553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998036 + ... + 998417.

It is an arithmetic number, because the mean of its divisors is an integer number (95829792).

Almost surely, 2^381322523 is an apocalyptic number.

381322523 is a deficient number, since it is larger than the sum of its proper divisors (1996645).

381322523 is a wasteful number, since it uses less digits than its factorization.

381322523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996644.

The product of its digits is 8640, while the sum is 29.

The square root of 381322523 is about 19527.4812251862. The cubic root of 381322523 is about 725.1549557015.

The spelling of 381322523 in words is "three hundred eighty-one million, three hundred twenty-two thousand, five hundred twenty-three".